The vampire doesn't have much of a leg to stand on. He won't even drink human blood.

[If it's a joke, it's hard to tell. It sounds amused maybe because he's just talking to Minato.]

I don't know if you have a choice. [Slowly and fluidly, he squats down and lifts an arm out, bent at the elbow.] Come. I know just the place for sleepy cats.